Re: Comparable Yamaha 4 stroke to a 50 2 stroke
I think you're going to find it very difficult to make a match out of that. Especially going to a 4 stroke. Most of the mfg's have their own cables, pins, connectors specific to their own motors. Even within the same mfg. different years will vary on their own systems. ( And I'm just talking about a couple ).
Think if you really want to upgrade to that 4 stroke you might just have to bite the dust and install a new control system as well.
Take a look on EBay - might find what you're needing at a cost saving.
C/L is also an option - sorta'.